Loom



s. .1. GEDDINGS Mai-ch 7, 1939.

LooM' Filed Oct. 16, 1937 '2' Sheets-Sheet 1 I March 7, 1939. 5. J.GEDDINGS 2 Sheets-Sheet 2 Filed Oct. 16, 1957 Patented Mar. 7, 1939UNITED STATES ram OFFICE LOOM Brcokland, S. 0.

Application Octcber 16, 1937, Serial No. 169,443

3 Claims.

My invention relates to improvements in weft or filling replenishinglooms of the bobbin-changing class.

An important object of the invention is to provide electrically actuatedmeans to shift the latch or dog of the transferrer to the operativeposition for engagement with the bunter carried by the lay, when thefilling is exhausted from the quill.

'11,: A further object of the invention is to provide electrical meansof the above mentioned character, including contact-feelers, arranged tocontact with a metallic sleeve or element mounted upon the quill, whenthe filling is exhausted,

15 the arrangement of the parts being such that the circuit foreffecting the replenishing of the bobbin will not be closed if theshuttle comes to rest beyond defined limits.

A further object of the invention is to provide apparatus of the abovementioned character,

which is of simple construction, reliable in operation and may beinstalled upon a conventional loom such as the Draper loom, withoutmaterially altering the construction of the same.

o A further object of the invention is to provide M electricallyoperated contact-feelers, which will cause the apparatus to operate witha high degree of accuracy, eliminating the production of seconds, andthe transfer of filled bobbins into the shuttle before the bobbintherein has the filling completely removed therefrom.

A further object of the invention is to provide a feeler which will notimproperly actuate the transferrer, by engagement with the filling 35 onthe quill and which will not actuate the transferrer until the fillinghas its last layer covering the contact element removed from the quill.

Other objects and advantages of the invention will be apparent duringthe course of the fol- 40 lowing description.

In the accompanying drawings forming a part of this application and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a perspective view of apparatus embodying my invention,showing the same applied to a loom,

Figure 2 is a plan view of the same,

Figure 3 is a diagrammatic view showing the electrical circuit andassociated elements,

Figure 4 is a transverse section taken on line 4-4 of Figure 2,

Figure 5 is a transverse section taken on line 55 55 of Figure 4,

Figure 6 is a plan view of the contact-feeler device, with the top plateremoved,

Figure '7 is a side elevation of the filling feeler slide and associatedelements, the rock-shafts being in section, taken on line l-l of Figure2, 5

Figure 8 is a central vertical longitudinal section through the fillingfeeler slide, parts in elevation,

Figure 9 is a transverse section taken on line 99 of Figure 7, and, 10

Figure 10 is a side elevation of the transferrer and associatedelements.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral Hi designates a loomas a whole, which may be a conventional Draper weft-replenishing loom ofthe bobbin-changing class. The bobbin replenishing means is not shownbut is on the end of the loom remote from the end shown in Figure 1 ofthe drawings. The bobbin replenishing means may be of the type shown inthe patent to H. A. Owen, 1,291,101. The numeral I4 is the transferrer,I5 is the fixed stud upon which the transferrer is pivotally mounted,and It the latch or dog of the transferrer. The numeral l'i designatesthe hunter carried by the lay which serves in the forward movement ofthe lay to engage with said latch or dog [6 when the latter is raisedthrough the action of the weft detecting devices embodying the presentinvention, so that the hunter may transmit movement through the latch orthe dog to the transferrer to actuate the transferrer to feed theleading bobbin or other weft carrier into the shuttle. The elements I4,[5, l6 and I! are the identical elements shown and described in Patent1,291,101. The present invention resides in means to elevate to latch ordog I6, so that it will be engaged by the bunter ll.

The loom comprises a frame including a breast beam l8, and a layincluding shuttle boxes I9 (on-e being shown), for receiving a shuttle23, detachably holding a quill 2|. This quill is of the conventionaltype except that it is provided with a metal contact band 22, which isapproximately one inch in length.

Mounted near and above breast beam I8 is my improved filling feelerslide, designated as a whole by the numeral 23. This slide is forked,providing spaced tines 24, receiving therebetween a vertically swingingpawl 25, pivoted to the same at one end, as shown at 26. This pawl iselevated by a retractile coil spring 26, attached thereto, and to a bolt21, adjustable connected with an inverted U-shaped bridge 28, rigidlysecured to the tines 24. The upward movement of the pawls 25 is limitedby an adjustable stop 29, having screw-threaded engagement with anupstanding bracket 30, rigidly carriedby one tine 24. An invertedU-shaped lever 3| has a forked end 32, which straddles the bridge 28 andis pivoted thereto at 33, to swing in a vertical plane, and anadjustable bolt 34 is secured to the free end of the lever 3|, and isarranged above the pawl 25, to contact therewith, at a point suitablyspaced from the pivot 26 of the pawl. The lever 3| is provided with anarmature 35, arranged near and above electro-magnets 36, rigidly mountedupon a bracket 31, in turn rigidly secured to the bridge 28. It is thusseen that when the electro: magnets are energized, the lever 3| willmove downwardly, and depress the pawl 25, in opposition to its spring26'. The filling feeler slide 23 is horizontally arranged and partakesof rectilinear reciprocatory movements in a horizontal plane, and onetime 24 has a depending extension 38, slidably supported by the usualfilling motion stand 39, it being understoodthat the slide 23 issubstituted for the conventional filling feeler slide. The fillingfeeler. slide 23 has a laterally extending horizontal rib 40, engaged bya stationary bracket. 4|, which prevents the filling feeler slide 23moving upwardly and also preventing any tendency for it to movelaterally toward the bracket 4|, while any lateral movement in theopposite direction would be prevented by the usual straddle bug.However, there is practically no tendency for the slide 23 to partake oflateral displacement. My improved filling feeler slide 23 is providedatone end with an apertured,

knuckle 42, aranged between apertured knuckles 43, Figure 1, andpivotally connected therewith, as shown at 44. These knuckles are formedupon the upper end of an upstanding vertically swinging lever orstarting broad arm 45, Which is rigid- 1y mounted upon a rock-shaft 46,in turn suitably mounted upon the frame of the loom and extending to theopposite end of the loom, to actuate the means which raises the dog orlatch I6, to be described. This means comprises a crank 41,

clamped to the rock-shaft 46, and having alever 46 clamped thereto,provided with a fork 49, re-

ceiving an extension56 carried by a vertically swinging link 5|, pivotedat'52. This link has a slot 53, to receive a pin 54, carried by anextension 55, depending from the dog or latch I6. It is thus seen thatthe clockwise turning movement of therock-shaft 46 will elevate thelatch or dog I6, as is well known in the art. The rock-shaft is turnedin the opposite direction by the usual spring.

The numeral 56 designates a filling cam follower dog or lever, rigidlyattached to a coupling 51, in turn rigidly mounted upon'a rock-shaft 56,which is cam actuated in the conventional automatic filling'replenishingloom. The dog 56 is generally vertically arranged and carries a bolt 59passing through selected openings '66 in a dog 6 I. This dog has 2.depending tail 62, arranged to engage with an adjustable stop bolt 63,carried by the filling cam follower dog or lever 56. By ma-' the pawl25, when the pawl 25 is lowered. An

electrical contact-feeler is provided for coaction with'the' metallicsleeve 22 to closethe circuit'and energize the electro-magnet 36. Thisfeeler com- 61, in turn rigidly secured to the breast beam I8. Thecasing 66 is formed of insulating material and is made in upper andlower twin casing sections 66. Each casing section is provided with apair of longitudinal grooves 69, slidably receiving contact-feeler rods16, made of metal, and provided at their inner ends with lateralextensions 1 I, arranged to engage shoulders 12, for limiting theoutward movement of the feeler rods. The feeler rods are moved outwardlyby retractile coil springs 12', having electrical connection therewithand With binding posts 13 and 14. The circuit is made through thesprings 12, as will be explained. The contact feeler rods are positionedto be in proper alignment with the contact sleeve 22 of the quill, whenthe shuttle comes to rest at the proper position in the shuttle box, andwhen the lay moves toward the contact-feeler rods 10 with a depletedshuttle, thesefeelerrods electrically engage the sleeve 22, and thesleeve electrically connects the otherwise insulated feeler rods toclose the'circuit. A Wire 15 leading from the positive pole of thesource of current is electrically connected with thebinding post 13 anda wire 16 is electrically connected with the other binding .post 14and-with one end of the winding of one electro-magnet 36, the magnetsbeing connected in series, and awire 11 is connected with the free endof the winding of the other electro-magnet, and the wire 11 leads to thenegative pole of the source of current. It is thus seen that when thesleeve 22 electrically connects the contact-feeler rods 16 that acircuit will be closed and the electro-magnets 33 energized and thelever 3| drawn downwardly, lowering the pawl 25 so that it is positionedin the path of travel of the tooth 65 of the dog 6|.

The operation of the apparatus is as follows:

While the filling is on the quill 2|, the filling serves to cover thecontact sleeve 22 and insulate it from the contact feeler rods 16, andhence the circuit to energize the electro-magnets is not closed when thelay moves forwardly to bring the filling into engagement with thecontaizt-feeler rods. The pawl 25 remains elevated, and is not engagedby the tooth 65 of the dog 6|, which is continuously rockingtransversely of the frame of the loom, during the operation of the loom.

When the last layer of the filling is removed from feeler rods 16 engagethe contact-sleeve 22 and a circuitis closed which will energize theelectro-magnets 33. As soon as this occurs, the lever 3| is moveddownwardly and the pawl depressed.

into the path of travel of the tooth 65 of the dog 6|, and the forwardswinging movement of this dog is transmitted to the filling feeler slide23, which in turn swings the starting broad arm or lever 45 and turnsthe rock-shaft 46. This rockshaft, through the medium of the connecting.means including the lever 48 will raise the latch or dog I6 so that itwill be in the path of travel of the bunter I1, so that the action ofthe lay.

. may operate the transferrer I4, as is Wellknown in the art. Animportant feature of the invention is the fact that the contact-feelerrod 10 are placed relatively close together, and the contact sleeve 22is relatively short, thereby preventing' operation of the transferrer,if theshuttle 20' should stop a considerable distance outside" of aproper limit. If this should occur, only one contact-feeler rod 10 wouldengage the metallic contact sleeve 22, the other contact-feeler rodengaging with the quill, ordinarily formed of wood, and hence thecircuit would not be closed to energize electro-magnets, and the pawl 25would not be lowered to be engaged by the tooth of the dog 6|, for thepurpose explained.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same and thatvarious changes in the shape, size, and arrangement of parts may beresorted to, without departing from the spirit of my invention or thescope of the subjoined claims.

Having thus described my invention, what I claim is:

1. In a filling replenishing loom of the bobbin-changing class having atransferrer dog, a filling feeler slide having a forked end providingspaced tines, means to guide the filling feeler slide so that itreciprocates in a substantially horizontally rectilinear path, arock-shaft which is continuously moved during the operation of the doom,an upstanding cam follower dog mounted upon the rack-shaft and having anengaging part projecting between the tines, a bridge mounted upon thetines, a generally horizontal pawl arranged between and pivotallyconnected with the tines, a means connected with the bridge and with thepawl to hold it elevated out of the path of travel of said engagingpart, a generally inverted U-shaped lever having a forked end straddlingthe bridge and pivotally connected with the bridge and its free endengaging the pawl, electrically operated means to swing the lever towardthe pawl for moving the same in to the path of travel of said engagingpart, and means operated by the filling feeler slide to actuate thetransferrer dog of the loom.

2. In a filling replenishing loom of the bobbin-changing class having atransferrer dog, a filling feeler slide having a forked end providingspaced tines, means to guide the filling feeler slide so that itsreciprocates in a substantially horizontal rectilinear path, areciprocatory cam follower dog operating during the operation of theloom and having an engaging part projecting between the tines, agenerally horizontal pawl arranged between the tines and pivotallyconnected therewith, an inverted U- shaped bridge arranged above andconnecting the tines, a means connecting the pawl and bridge to retainthe pawl elevated and out of the path of travel of the engaging part, aninverted U-shaped lever having a forked end straddling the bridge andpivotally connected therewith and its free end engaging the pawl to moveit downwardly, an armature carried by the lever, an electro-magnetarranged within the inverted U-shaped lever near and beneath thearmature and mounted upon the bridge, a circuit adapted when closed toenergize the electro-magnet including a contact element carried by thequill, and means operated by the filling feeler slide to actuate thetransferrer dog of the loom.

3. In a filling replenishing loom of the bobbin-changing class having atransferrer dog, a filling feeler slide having a forked end providingspaced tines, an upstanding cam follower dog moving during the operationof the loom, a second dog, a bolt carried by the cam follower dog andpassing through an opening in the intermediate portion of the seconddog, an adjusting bolt carried by the cam follower dog and engaging thesecond dog at a point remote from the first named bolt, the second dogbeing provided near its upper end with a pawl engaging part disposedbetween the tines, a pawl arranged between the tines and pivotallyconnected therewith, means to normally hold the pawl out of the path oftravel of the pawl engaging part, an electrically operated devicemounted upon the tines and adapted when energized to move the pawldownwardly into the path of travel of the pawl engaging part, a circuitadapted when closed to energize the electrically operated device'andincluding a contact part mounted on the quill, and means operated by thefilling feeler slide to actuate the transferrer dog of the loom.

SAINT JULIAN GEDDINGS.

